Oral care device

Abstract

The present disclosure provides an oral care device. The oral care device includes a handle part and a care head part; the handle part includes: a sonic motor including a motor body and a power output shaft, a fluid mechanism provided with a fluid inlet and a fluid outlet, and a housing including a machine mounting part and a water storage cavity. By using the oral care device provided by the present disclosure, the reasonable layout of a rinsing flow path can be achieved, the overall size of the oral care device can be reduced, it is convenient for a user to perform an operation, and the comfort level provided for a user during use can be improved.

What is claimed is: 
     
       1. An oral care device, comprising a handle part and a care head part; wherein the handle part is configured to be suitable for hand-holding and comprises:
 a sonic motor comprising a motor body and a power output shaft, the motor body having an output axis extending in a power output direction; the power output shaft being a columnar object extending along the output axis and passing through the motor body, the power output shaft being configured to cooperate with the motor body and transmit output power from the motor body and having an axial channel parallel to the output axis as well as a first inlet and a first outlet communicating with the axial channel; 
 a fluid mechanism provided with a fluid inlet and a fluid outlet, the fluid outlet communicating with the first inlet; and 
 a housing extending in the axial direction of the power output shaft and forming a cylindrical structure of which an inside is hollow, the housing comprising a machine mounting part and a water storage cavity, the machine mounting part being internally provided with a mounting rack, the mounting rack having a motor compartment and a pump body compartment, the sonic motor being mounted in the motor compartment, the fluid mechanism being mounted in the pump body compartment, and a head of the machine mounting part being provided with a mounting shaft hole which allows the power output shaft to penetrate through and is in an assembly fit with the power output shaft; 
 wherein the care head part is provided with a rinsing stem parallel to the output axis and a brush head disposed on a head of the rinsing stem, the rinsing stem is mounted on the power output shaft, the brush head comprises bristles and a spray nozzle, the bristles extend in a direction which forms a preset included angle with the output axis, and the rinsing stem is provided with a fluid channel capable of communicating the spray nozzle with the axial channel; 
 in an extension direction of the output axis, the first outlet of the axial channel is capable of communicating with the fluid channel of the care head part, and during use of the oral care device, water in the water storage cavity can enter the axial channel from the first inlet of the axial channel under an action of the fluid mechanism, flow from a first end to a second end of the motor body via the axial channel, then, enter the fluid channel of the care head part from the first outlet of the axial channel and be sprayed out of the brush head of the care head part; 
 the handle part further comprises at least one damping cushion. 
 
     
     
       2. The oral care device of  claim 1 , wherein the power output shaft has a Rockwell hardness HRC ranging from 17 to 70 and a single-sided wall thickness ranging from 0.3 mm to 1 mm. 
     
     
       3. The oral care device of  claim 1 , wherein in a section perpendicular to the output axis, a ratio of a sectional area of the power output shaft to a sectional area of the axial channel ranges from 1.5 to 9, a single-sided wall thickness of the power output shaft ranges from 0.3 mm to 1 mm, and an internal diameter of the axial channel ranges from 0.5 mm to 3 mm. 
     
     
       4. The oral care device of  claim 1 , wherein the at least one damping cushion further comprises:
 a front damping cushion sleeving on a front end of the sonic motor, the front end of the sonic motor being mounted in the machine mounting part by the front damping cushion; and 
 a rear damping cushion sleeving on a rear end of the sonic motor, the rear end of the sonic motor being mounted in the motor compartment by the rear damping cushion; 
 wherein multi-point elastic contact is formed between a periphery of the mounting rack and an inner wall of the machine mounting part. 
 
     
     
       5. The oral care device of  claim 4 , wherein the mounting rack comprises a mounting base, the mounting base is provided with the motor compartment, two opposite sides of the mounting base are respectively provided with mounting side plates facing away from each other, edges, away from the mounting base, of the mounting side plates are provided with first elastic bosses; and through grooves passing through each of the mounting side plates in a thickness direction are formed in the mounting side plates, and connecting arms located on sides, away from the mounting base, of the through grooves protrude in a direction away from the mounting base to form the first elastic bosses. 
     
     
       6. The oral care device of  claim 5 , wherein an inner wall of the machine mounting part is provided with mounting grooves extending in a mounting direction of the mounting rack, the mounting side plates are clamped in the mounting grooves, two opposite side walls of each of the mounting side plates are provided with second elastic bosses protruding towards side walls of the mounting grooves, and multi-point elastic contact is formed between the mounting side plates and the side walls of the mounting grooves by the second elastic bosses. 
     
     
       7. The oral care device of  claim 4 , wherein the front damping cushion has a damping plane, an inner wall of the machine mounting part is provided with first strip-shaped walls protruding towards the damping plane, the first strip-shaped walls are tightly pressed and fitted to the damping plane, the rear damping cushion is provided with a damping boss on a side where the damping plane is located, the inner wall of the machine mounting part is provided with second strip-shaped walls protruding towards the damping boss, and the second strip-shaped walls are tightly pressed and fitted to the damping boss. 
     
     
       8. The oral care device of  claim 7 , wherein on a side opposite to the damping plane, two side edges of both the front damping cushion and the rear damping cushion are provided with supporting planes, the inner wall of the machine mounting part is provided with third strip-shaped walls protruding towards the supporting planes, and the third strip-shaped walls ( 36 ) are tightly pressed and fitted to the supporting planes of both the front damping cushion and the rear damping cushion. 
     
     
       9. The oral care device of  claim 1 , wherein the fluid mechanism comprises a casing and a fluid pump located in the casing, the fluid pump is located between the fluid inlet and the fluid outlet, the fluid inlet communicates with a suction inlet of the fluid pump, and the fluid outlet communicates with a pump outlet of the fluid pump. 
     
     
       10. The oral care device of  claim 9 , wherein an outlet end of the fluid mechanism is provided with a fluid delivery shaft, the fluid delivery shaft is provided with a fluid channel, the fluid channel communicates with the fluid outlet, and the fluid delivery shaft communicates with the power output shaft by a connector. 
     
     
       11. The oral care device of  claim 10 , wherein the connector has a communication cavity, a first end facing the power output shaft and a second end facing the fluid mechanism, a first end of the power output shaft extends into the first end of the connector, and an end of the fluid mechanism where the fluid outlet is located extends into the second end of the connector. 
     
     
       12. The oral care device of  claim 11 , wherein the communication cavity comprises a first communication segment communicating with the first inlet and a second communication segment communicating with the fluid outlet, the first communication segment communicates with the second communication segment, an end part of the first communication segment is provided with a first sealing groove, an end part of the second communication segment is provided with a second sealing groove, and each of the first sealing groove and the second sealing groove is provided with a sealing element therein. 
     
     
       13. The oral care device of  claim 12 , wherein the first communication segment and the second communication segment are disposed in a staggered manner, the connector is provided with an avoidance groove on one side of the first communication segment, the connector is provided with adjusting grooves on two opposite sides of the second communication segment, and the connector has a same wall thickness on both sides of each of the adjusting grooves. 
     
     
       14. The oral care device of  claim 1 , wherein the care head part further comprises a connecting structure configured to be capable of transmitting a driving force of the power output shaft to the rinsing stem, the connecting structure is disposed on an end, away from the brush head, of the rinsing stem and is capable of being snap-fitted with the power output shaft to limit axial movement of the power output shaft relative to the rinsing stem. 
     
     
       15. The oral care device of  claim 14 , wherein a periphery of the power output shaft is provided with a clamping groove extending in a circumferential direction of the power output shaft, the connecting structure comprises:
 a connecting support having an internal through hole parallel to the output axis, wherein the power output shaft can be inserted in the internal through hole; and 
 a clamping piece disposed on the connecting support, the clamping piece comprising two clamping arms spaced apart in a radial direction of the power output shaft, and the two clamping arms having a clamping position, in which the two clamping arms are close to each other and become snap-fitted with the clamping groove, and an unclamping position, in which the two clamping arms are away from each other and become not snap-fitted with the clamping groove. 
 
     
     
       16. The oral care device of  claim 15 , wherein the clamping piece further comprises an elastic arm for connecting the two clamping arms so that the two clamping arms can be switched from the unclamping position to the clamping position. 
     
     
       17. The oral care device of  claim 15 , wherein the connecting support is provided with a mounting via groove communicating with the internal through hole, and the mounting via groove passes through the connecting support in the radial direction of the power output shaft; and inner walls on circumferential sides of the mounting via groove are in clearance fit with the clamping arms. 
     
     
       18. The oral care device of  claim 17 , wherein the clamping piece further comprises an elastic arm for connecting the two clamping arms, the connecting structure further comprises a retaining rib connected to the connecting support, one end of the mounting via groove is provided with the retaining rib, and the elastic arm is partially located on a side, facing away from the internal through hole, of the retaining rib so that a displacement of the elastic arm is limited thereby. 
     
     
       19. The oral care device of  claim 18 , wherein the connecting structure further comprises a locating rib disposed on the other end of the mounting via groove, the clamping piece further comprises two locating arms respectively connected to the two clamping arms, and the two locating arms are spaced apart and are located on two sides of the locating rib. 
     
     
       20. The oral care device of  claim 15 , wherein the rinsing stem is provided with a mounting through hole communicating with the fluid channel, a step surface is disposed between the mounting through hole and the fluid channel, and the connecting structure is located in the mounting through hole and is constrained between the step surface and an end face of the housing.